Hanger assembly for suspended concrete forms



HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMS Filed June 4, 1968 Aug. 25,1970 L. P. BROSSEAU.

2 Sheets-Sheet 1 M E M n Aug. 25, 1970 3,525,495

HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMS Filed June 4., 1968 L. P.BROSSEAU 2 Sheets-Sheet 2 Mum r01? f? 5/? 05 S E A l/ Aria/Ma UnitedStates Patent 3,525,495 HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMSLouis Philippe Brosseau, 7600 Place dAubigny, Ville dAnjou, 5 Montreal,Quebec, Canada Filed June 4, 1968, Ser. No. 734,472 Int. Cl. E04g 17/00US. Cl. 248-327 7 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THEINVENTION Field of the invention The present invention relates to ahanger assembly intended to rest on the top of a beam, usually a metalI-beam, for supporting a concrete form for the molding of concrete floorslabs or the like.

Description of the prior art There presently exist hanger assemblies ofthis type generally formed of a pair of suspension members rigidlyconnected together by a transverse tie rod intended to rest on andoverhang from the lateral edges of the top flange on an I-beam. Eachsuspension member is provided with an opening through which a boltvertically extends, said bolt also extending through one edge of theform which can then hang from the top flange of the I-beam.

A major drawback of the above-mentioned hanger assembly resides in thateach suspension member is formed with a single opening which is verticaland which therefore only provides one single direction for the extensionof the bolt and nut assembly adapted to support the concrete form.However, in some cases it is necessary that the bolts, intended tosupport the form, extend obliquely rather than vertically and in suchcases it is necessary to change the corresponding suspension member ormembers and replace it by a member formed with an oblique openingcorresponding to the desired direction of the bolts. Usually, thisdirection is 45. This means that the construction contractor has tocarry in stock, a large supply of hanger assemblies since the suspensionmembers may both have 90 openings, or both 45 openings or one a 90 andone a 45 opening. In view of the multiplicity of assemblies to beprovided, the manufacturing cost is higher, deliveries are sometimesdelayed and there is also possibilities of errors in the delivery, thelatter being particularly important in view of the costly delays thatthey may cause during construction.

SUMMARY OF THE INVENTION It is therefore an object of the presentinvention to provide a hanger assembly which is universal with respectto the orientation of the supporting bolts, that is, each suspensionmember is so formed that the said supporting bolts may selectively bedisposed either vertically or at 45 More specifically,. an object of theinvention resides in the provision of a three-part hanger assembly ofthe aforementioned type that comprises first means defining a verticalguiding and holding opening and second means defining an inclinedguiding and holding opening for the selective extension therethrough ofa vertical or obliquely inclined form-supporting bolt, the inclinationbeing preterably at 45.

With an arrangement according to the present invention, it will thus beappreciated that the hanger assembly may inditferently be used for asuspension at and one at 45, for two suspensions at 90 or for twosuspensions at 45 that a hanger assembly of a single type will berequired for any type of suspension, greatly reducing any errors ordelays during construction. For the supplier, it will mean that only onetype of assembly need be carried thus eliminating any error in delivery.Finally, for the manufacturer, this will mean that only one type ofhanger assembly need be manufactured thus increasing production anddelivery and reducing cost.

BRIEF DESCRIPTON OF THE DRAWINGS A preferred embodiment of the inventionwill now be described with reference to the appended drawings wherein:

FIG. 1 is a general perspective view of the hanger assembly of theinvention as shown mounted on the top flange of an I-beam andillustrating the two most general and common ways of inserting thesupporting bolts through the suspension members;

FIG. .2 is a perspective view of a suspension member, showing thepossibility of selecting one of two directions for the insertion of thesupporting bolts;

FIG. 3 is a cross-sectional view of a concrete slab molded over anI-beam and in a concrete form held by a hanger assembly according to thepresent invention; and

FIG. 4 is a blank form from which the suspension member of the inventionmay be manufactured.

With particular reference to FIGS. 1 and 3, it will be seen that thehanger assembly of the present invention is secured to the top flange 7of a structural I-beam 9.

The assembly comprises two identical suspension members 1, partlyresting on and partly overhanging the lateral edges 11 of the flange 7and a connecting rod 3 joining the two suspension members together. Theoverhanging portions 29 of members 1 are formed with two passages, avertical passage 13 and an oblique passage 15, defining two preferreddirections for the selective insertion of a supporting bolt 17. In theusual manner, the bolt 17 passes through the beam 21 and bottom plywoodsheet 23 of the concrete form before extending through either thepassage 13 or 15 of the suspension member 1. A washer 27 is then slidover the threaded end of the bolt 17 followed by a tightening nut 19 sothat the bolt 17 may be removed after the concrete has set.

In the illustration of FIGS. 1 and 3, one bolt extends vertically whilethe other bolt extends at 45 which are the two preferred directions oforientation of the bolts. It will of course be understood that in somecases, the orientation of both bolts may be vertical or both may be inclined at 45 as aforesaid.

FIG. 3 illustrates a cross-section through the I-beam 9, the concreteform 21, 23 and the concrete slab 4. The illustration is the same asthat of FIG. 1 with the addition of the concrete slab 4.

The perspective view of FIG. 2 more clearly illustrates the overhangingor second portion 29 of a suspension member 1. It will be seen that thisoverhanging portion defines a vertical passage 13 and an oblique passage15 generally extending at 45. Inwardly of overhanging portion 29 is anupstanding first portion 31, generally corrugated for strength purposesand resting, along its bottom edge, on the top flange 7 of beam 9 alongthe lateral edges thereof. This first portion 31 is actually formed of apair of spaced upright sidewalls 35 between which the end 37 of theconnecting tie rod 3 is received to be welded to the said sidewalls 35.The latter are bent, at

3 39, outwardly to define laterally projecting flanges 41 provided asstabilizing means for the suspension members 1. The two selectivedirections of orientation of the bolts are emphasized by theillustration of the said bolts, in

dotted lines.

Preferably, the suspension member 1 may be made of a rigid metal platefolded from a blank produced by a combined stamping and punchingoperation or by any other suitable method. Such a blank is illustratedin FIG. 4.

The blank generally comprises a pair of rectangular wing-like sideportions 45 and a middle portion 47, the latter having a central part 48projecting upwardly above portions 45 and having two ear-likeprotrusions 49. The lower edge of middle portion 47 is cut out to definea rectangular opening 51 capped by an elongated slot 53. The blank isthen bent 180 about a vertical central line through central part 47,ensuring that the sidewalls 35 (FIG. 2) are spaced a distance generallyequal to the diameter of the connecting rod 3. Bars 49 are then bentinward as shown in FIG. 2 and the outward ends of the rectangularwing-like portions 45 bent outward to define the aforesaid flanges 41.Furthermore, flaps 55 (FIG. 4) defined by the rectangular opening 51 andthe elongated slot 53, are bent inward to define a vertical wallintended to stand in alignment with the edge 11 (see FIG. 1) of the topflange 7 of beam 9.

In this manner (see FIGS. 2 and 4), the vertical passage 13 is definedby the bight of the U-shaped element formed in bending the blank of FIG.4, the said bight also forming a top horizontal opening 14 for theseating of a washer 27 and a bottom opening 16 for the outlet of thebolt 17.

The legs 18 of the U-shaped element have upper inclined edges 20intended for the seating of a washer 27 While the lower edges of thelegs 18 merge with the bottom opening 16 to thus define the inclinedpassage 15 for a bolt 17.

Transverse wall 43, formed by the ears 49 has a top edge that closes upthe horizontal opening 14.

Referring back to FIG. 4, suitable guide lines 54 may be provided tofacilitate folding.

I claim:

1. A hanger assembly for supporting concrete forms from the top of abeam or other supporting surface, said assembly comprising:

(a) a pair of suspension members resting on the top of said beam, eachmember having means thereon for receiving in preselected directions asuspension bolt for supporting said concrete form;

(b) a rod connecting said supporting members;

(c) said suspension members each being made of a bent metal plate andeach being provided with two openings corresponding to said preselecteddirections, each opening being adapted to receive said suspension boltin one of said preselected directions;

(d) wherein one of said openings provides a vertical passage for saidsuspension bolt and said other opening provides a second passage forsaid suspension bolt, said second passage being inclined at an angle of45 with respect to the vertical passage;

(e) each suspension member having a cantilever head portion with respectto the edge of the top surface of said beam, said head portion definingsaid openings; a middle portion having a pair of spaced side walls towhich said connecting rod is fixed, and two outwardly projecting backflanges perpendicular respective to said side Walls and adapted tostabilize said suspension member on said top surface.

2. A concrete form supporting assembly comprising:

(a) a structural beam having a substantially horizontal (b) a pair ofsuspension members each formed of a first portion resting on said beamtop and merging into a second portion overhanging from one lateral edgeof said beam top;

(0) first means in said second portion of each suspension memberdefining a vertical guiding and holding passage for the verticalextension therethrough of a form-supporting bolt;

(d) second means in said second portion of each suspension memberdefining an inclined guiding and holding passage for the inclinedextension therethrough of a form-supporting bolt;

(e) form-supporting bolts extending through said guiding and holdingpassages of said supporting members, and

(f) an elongated element joining together said first portions of saidsuspension members over said beam top.

3. An assembly as claimed in claim 2 wherein:

said first portion of each suspension member is a pair of spaced uprightwalls having lower edges resting on said beam top, up to the adjacentlateral edge thereof;

wherein said second portion is a generally U-shaped element having abight and two legs projecting therefrom; said legs integrally joiningsaid upright walls;

wherein said first means is defined by said bight; said bight forms ahorizontal top opening, forms a lower opening and forms said verticalpassage, and

wherein said second means is defined by said legs; said legs form upperinclined edges, form lower edges merging with said bottom opening andform said inclined passage.

4. An assembly as claimed in claim 3, including a transverse Wallextending across said legs at the top of said inclined edges; said wallhaving an edge thereof closing up said horizontal top opening.

5. An assembly as claimed in claim 3, wherein said spaced upright wallsare bent out at right angles at the ends thereof away from said secondportion to define stabilizing flanges.

6. An assembly as claimed in claim 3, wherein said elongated elementsare rods fixedly secured at the ends thereof between said spaced uprightwalls of said suspension members.

7. An assembly as claimed in claim 3, wherein said second portionstands, at least partially, at a level above said first portion.

References Cited UNITED STATES PATENTS 1,423,927 7/1922 Falk 287541,571,581 2/1926 Fliegelman et a1. 248-300 X 2,985,937 5/1961 Hillberg25-1315 FOREIGN PATENTS 566,256 4/1958 Belgium. 867,516 5/ 1961 GreatBritain.

ROY D. FRAZIER, Primary Examiner J. F. FOSS, Assistant Examiner U.S. Cl.X.R.

